JPS60201773A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To enlarge just a part of a transmission original by a facsimile equipment at the transmission side and to obtain an enlarged record picture at the reception side, by reading and enlarging only a specified area marked on the original. CONSTITUTION:When a facsimile equipment starts reading a transmission original, a mark detector 16 supplies the read signal for the 1st main scan line delivered from a reading part 14 and discriminates whether or not a black picture signal having the length equivalent to a mark is contained. When the mark is detected, a CPU11 recognizes that the partial enlargement is carried out and discriminates the start point of an enlarged area in the main scan direction. This discrimination data is registered to an area register 17 as the position data on the start point in the main scan direction. Then the normal reading and picture processings are carried out to start the normal transmission. Then a picture is enlarged by the CPU11 at a place where a subscan mark exists.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile machine capable of enlarging an image.

[Prior art]

When the original to be sent (hereinafter referred to as the transmitted original) contains small characters or figures, it is convenient to use a facsimile machine with an enlargement function. In such a facsimile machine, a document to be transmitted is enlarged to the size of recording paper on the receiving side before being transmitted. As a result, a recording surface of Δ4 size can be obtained from, for example, a B5 size original to be sent.

However, with such facsimile machines, even if only a portion of the document to be sent contains small characters or graphics, the entire document is enlarged. Therefore, there was a disadvantage that transmission time was wasted and communication costs were relatively high. Furthermore, the magnification rate is limited by the size of the recording paper of the facsimile machine on the receiving side, and it may not be possible to sufficiently magnify depending on the characters or graphics of the transmitted document.

[Purpose of the invention]

In view of these circumstances, it is an object of the present invention to provide a facsimile device that can enlarge a portion of a transmitted document.

[Structure of the invention]

The present invention includes an image reading means for reading an image on a transmission document, a mark reading means for reading a mark written in advance on the transmission document, and a specific area on the transmission document based on the mark read by the mark reading means. and a state in which the image of the area determined by the area determining means out of the image read by the image reading means is enlarged and pasted on top of the other normal image. The facsimile apparatus is provided with a signal processing means for transmitting an image signal. Then, the image is enlarged only in the enlargement area specified by the mark.

The mark may be written on a special mark sheet, but it may also be written on the i@i portion of the manuscript. In this case, the image reading means can read the image and discriminate the mark in parallel. By aligning the scanning start edge of the enlarged image with the scanning start edge of the entire transmitted document,
You can set the maximum area that can be enlarged. If the remaining area at the same sub-scanning position as the enlarged area is a ground color (white) area, efficient image transmission can be performed.

〔Example〕

The present invention will be described in detail with reference to Examples below.

FIG. 1 shows the main part of the circuit configuration of the facsimile machine of this embodiment. This device is equipped with a CPU (central processing unit) 11 for controlling the operation of each part of the device. ROM (!J-de-only memory) 1
2 stores a program for controlling this cpuz. A RAM (random access memory) 13 is a working memory for temporarily storing processing data. The reading unit 14 includes an image sensor,
This is the part that scans the plane of the original to be sent. Operation panel 15
There are keys for setting the magnification ratio.

The mark detector 16 is a part that detects the presence of a mark from the read signal output from the reading section 14. The area register 17 is a memory that registers the position of the detected mark in the main scanning direction. The magnification register 18 is a memory for registering the magnification rate input from the keyboard 15.

The encoding section 19 is a section that encodes the image signal output from the reading section 14 at a normal magnification or at an enlarged magnification. The modulation unit 20 is a part that modulates the encoded image signal. These parts are connected by a bus 21 to transmit necessary data.

First, a method of specifying an enlargement area in this facsimile machine will be explained. When this facsimile machine enlarges a portion of a transmission document and transmits it electronically, markings are applied to the transmission document. FIGS. 2 and 3 show examples of this. A main scanning direction mark 24 and a sub-scanning direction mark 25 are attached to the transmission original 23 . Here, the main scanning direction mark 24 is a mark indicating the starting point in the main scanning direction of the enlarged area 26 indicated by diagonal lines. Further, the sub-scanning direction mark 25 is a mark indicating the position or range of the enlarged area 26 in the sub-scanning direction. These marks 24 and 25 may be printed on the transmission document 23 in advance, or may be written with a pencil or the like.

FIG. 4 shows the correspondence between manuscript paper and recording surfaces suitable for use by travel agencies, for example.

The original paper 28 corresponds to the transmission original 23 shown in FIG. 2, and has a main scanning direction mark 24 and a sub-scanning direction mark 25 printed thereon. As can be seen from the comparison with the recording surface 29, the area 3 where the sub-scanning direction mark 25 is not attached
The image information of No. 1 is reproduced in the area 32 of the recording surface 29 as image information of the same size. These areas 31 and 32 are used as areas for transmitting and receiving text information such as travel schedules.

On the other hand, maps for hotel guidance and sightseeing are attached to the enlarged area 26. The enlarged area 33 on the recording surface 29 is designed to enlarge the enlarged area 26 of the transmission document by four times in area, so that even the finer parts of the map will not become indecipherable due to noise.

The remaining area 35 of the original paper 28 becomes an unrecorded portion due to the enlarging action of the enlarging area 26. In this area 35, information that is unnecessary or inconvenient for transmission, such as the serial number of the transmitted document and additional information about the traveler, can be entered.

FIG. 5 shows an example of the transmission document 23 shown in FIG. 3 and its recording surface. In this example, the design drawing 37 is the transmission manuscript. If a copy of a part of the part 38 of this design drawing 37 is attached to the enlargement area 26, the part 38 will be enlarged and recorded in the enlargement area 41 on the recording surface 39.

The operation of a facsimile machine having such a function will be explained with reference to FIG. After a control signal is transmitted to a receiving facsimile machine (not shown), the facsimile machine of this embodiment starts reading the transmitted document. At this time, the magnification rate is manually entered into the magnification register 18 from the operation panel 15. The mark detector 16 manually reads the reading signal for the first main scanning line output from the reading section 14 and determines whether a black image signal with a bit length corresponding to the mark is included. Mark detection is performed when such an image signal is included. When a mark is detected, CPL III recognizes that partial enlargement is to be performed (step 2; Y in FIG. 6). When marks are detected at two locations on the main scanning line as shown in FIG. 3 or 5, the second mark becomes the main scanning direction mark 24.

In this way, the starting point of the enlarged area in the main scanning direction is determined (step 2). This discrimination data (hereinafter referred to as main scanning start data) is registered in the area register 17 as position data of the starting point in the main scanning direction (step 2).

On the other hand, if there is no mark on the first main scanning line of the transmitted document, cPUll determines that partial enlargement will not be performed (step 2; N). In this case, a normal reading operation is performed, and an image of the same size is transmitted (step ■).

Now, when partial enlargement is to be performed, after the main scanning start data is registered in the area register, so-called normal transmission is started by normal reading and image processing (step (2)). After transmission has started, the CPL III inputs the detection results of the mark detector 16 near the starting point of each main scanning line, and determines whether there is a black band of a predetermined width at the left end of the transmission document (step ■). . If there is a black band (Y), this is the sub-scanning direction mark 25.

At the location where the sub-scanning direction mark 25 is present, the CPU 11 performs image enlargement processing (step 2).

This is done as follows.

(i) After confirming the sub-scanning direction mark 25, the main-scanning start data registered in the area register 17 is read out, and this data is stored in the RAM 13.

(11) A clock corresponding to the bit of the image signal output from the reading section 14 is counted, and this image signal is discarded until it matches the value of the main scanning start data. That is, for example, the image sandwiched between the sub-scanning direction mark 25 and the enlarged area 26 shown in FIG. 3 is not transmitted to the receiving side.

(iii) When the clock count value matches the main scanning start data value, the image signal of that scanning line thereafter is R.
It is stored in AM13. Bits are inserted into the image signal once stored in the RAM 13 according to the enlargement ratio, and the image signal is outputted to the encoding section 19 as an enlarged image signal.

(1v) Enlargement in the sub-scanning direction is performed by inserting M−N lines into N lines. Here, N and M are integers. When performing double enlargement in the sub-scanning direction (four times enlargement in area), N is 1 and M is 2. In this case, one line of image signals is stored in the RAM 13, read out twice, and converted into two lines of image signals. On the other hand, when enlarging by 50% in the sub-scanning direction, for example, N
becomes 2, M becomes 3, and one line is inserted every two lines.

After converting the N lines to M lines, it is determined at this point whether the reading of the transmitted original is finished (step 2). If the reading has not been completed (N), the presence or absence of the sub-scanning direction mark 25 is determined for the next main-scanning line (step ■). In this way, the image continues to be enlarged in the area where the sub-scanning direction mark 25 exists.

When the sub-scanning direction mark 25 no longer exists or when this mark 25 is not detected (step
;N), transmission processing for N lines is performed using normal encoding (step ■). That is, in this case, image transmission at the same size is performed. The concept of the numerical value N has already been explained.

When the transmission of N lines is completed, it is determined whether or not reading of the original is completed at this point (step ■). Image processing continues in this manner until the reading of the transmitted document is completed.

In the embodiments described above, a case has been described in which the length of the enlarged area 26 in the main scanning direction matches the width of the recording paper. When the enlargement ratio is set such that the length of the enlarged area 26 in the main scanning direction is longer, it is effective to display a warning on the operation panel 15 or the like. In this case, on the recording surface, there is a possibility that part of the image information in the main scanning direction regarding the enlarged area 26 is missing. Note that there is no problem in the sub-scanning direction when using long recording paper. Even when using cut paper, the problem can be solved by using multiple sheets of paper.

Next, when the length of the enlarged area 26 in the main scanning direction is shorter than the width of the recording paper, the image other than the enlarged area 26 may be electronically transmitted for the remaining portion, or this portion may be replaced with the ground color (white). It's okay.

〔Effect of the invention〕

As explained above, according to the present invention, only a part of the transmitted document is enlarged by the facsimile machine on the sending side, so it is possible to obtain an enlarged recording surface on the receiving side without using a special facsimile machine. .

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the main parts of a facsimile machine according to an embodiment of the present invention, FIGS. 2 and 3 are plan views showing an example of a transmitted document, and FIG. 4 shows how the present invention is used by a travel agent. FIG. 5 is an explanatory diagram showing the application of the present invention by a person involved in the design, and FIG. 6 is a flowchart for explaining the operation of the facsimile machine shown in FIG. 1. 11...CPU, 14...Reading section, 1
6...Mark detector, 19...Encoding unit, 23...Transmission original, 24...Main scanning direction mark, 25... Sub-scanning direction mark, 26
... Group/expansion area. Applicant Fuji Xerox Co., Ltd. Agent Patent Attorney Ume Yamauchi Figure 1 Figure 2 Figure 3 Main scanning direction Main scanning direction Figure 4 Figure 5 Figure 8

Claims (1)

[Claims] 1. Image reading means for reading an image on a transmission document; mark reading means for reading a mark written in advance on the transmission document; and a transmission document based on the mark read by the mark reading means. an area discriminating means for discriminating a specific area in the image; and an image reading means for enlarging the image of the area discriminated by the area discriminating means out of the image read by the image reading means, and pasting this as if on the other normal image. 1. A facsimile apparatus comprising: signal processing means for transmitting an image signal in such a state. 2. Claim 1, characterized in that the mark reading means identifies as a mark a portion of the image signal read by the image reading means that corresponds to a black band marked on the edge of the transmitted document. Facsimile machine as described. 3. The signal processing means arranges the image signals so that the main scanning start edge of each enlarged image area coincides with the main scanning start edge of the entire transmission document. The facsimile machine according to item 1. 4. When the enlarged image area does not cover the entire area in the main scanning direction, a margin processing unit converts an image signal corresponding to a normal image at the same sub-scanning position as this image area into an image signal corresponding to the ground color. 4. The facsimile apparatus according to claim 3, wherein the signal processing means is provided with: